To avoid everyone saying LaDainian Tomlinson or Junior Seau or Philip Rivers, I want to know your favorite non-star Chargers player. For me, it will probably always be Terrell Fletcher. You just can't beat a good third down running back, and Fletcher was the guy during my earlier years of being heavily invested in the team.
If I had to pick a player from this year's club, I probably lean toward Danny Woodhead for the same reason, though he's almost too good to meet the criteria of the question.